Fublin,
header ("content-type: text/css; charset: UTF-8");
header ("cache-control: must-revalidate");
$offset = 60 * 60;
$expire = "expires: " . gmdate ("D, d M Y H:i:s", time() + $offset) . " GMT";
header ($expire);
ob_start("compress");
function compress($buffer) {
$buffer = preg_replace('!/\*[^*]*\*+([^/][^*]*\*+)*/!', '', $buffer);
$buffer = str_replace(array("\r\n", "\r", "\n", "\t", ' ', ' ', ' '), '', buffer);
return $buffer;
}
include('1.css');
include('2.css');
include('3.css');
include('4.css');
include('5.css');
ob_end_flush();<link rel="stylesheet" type="text/css" href="/style.css.php" media="screen" /> в шапку